> For the complete documentation index, see [llms.txt](https://docs.syntho.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.syntho.ai/configure-a-data-generation-job/configure-column-settings/duplicate.md).

# Duplicate

Duplicate can be especially useful in the following situations:

1. When data does not contain personally identifiable information (PII) or sensitive elements, duplicating it allows for efficient replication without modification.

## Apply duplicate

1. Open your **Workspace**.
2. From the **Main hub** or **Table view** tab, select the column where you want to apply a generator.
3. Under **Generator,** select **Duplicate** to copy the column from the source table to the destination table *as-is.*
4. Set the relevant duplicate parameters.
5. Select **Confirm**.

<figure><img src="/files/JvTBKml1mLOpZwSu0BW3" alt="" width="563"><figcaption><p>Selecting Duplicate in Generation Method panel</p></figcaption></figure>

{% hint style="info" %}
**Note:** When you duplicate a column, the column is still used during the training process, as it can contain valuable information.

This means, however, that excluding columns *cannot* be used to to reduce hardware requirements or increase the speed of your synthetic data jobs.
{% endhint %}

## Text-specific masking

Text-specific masking options now live under **Mask** for text columns.

Use [Text](/configure-a-data-generation-job/configure-column-settings/mask/text.md) to configure:

* **Shuffle**
* [Rare Category Protection](/configure-a-data-generation-job/configure-column-settings/mask/text.md#rare-category-protection)
* [Free text PII obfuscation](/configure-a-data-generation-job/configure-column-settings/duplicate/automatic-pii-discovery-and-de-identification-in-free-text-columns.md)

## **Ordering and indexing considerations**

To ensure accurate ordering, please see [ordering and indexing considerations](/configure-a-data-generation-job/configure-column-settings/consistent-mapping.md#ordering-and-indexing-considerations).

## Supported data types

| Generator | Supported data types                                                                          |
| --------- | --------------------------------------------------------------------------------------------- |
| Duplicate | Categorical, Continuous, Discrete, Datetime, Bytes, Bool, UUID, JSON, XML, Geo, Sets, Unknown |


---

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